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P151A 2016 Chevrolet Silverado Code - Throttle Actuator Control Signal Message Counter Incorrect

Quick Answer

The P151A diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Throttle Actuator Control Signal Message Counter is incorrect. Common causes include Faulty throttle position sensor, Wiring issues or electrical connections, Defective throttle body. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P151A 2016 Chevrolet Silverado indicates Throttle Actuator Control Signal Message Counter Incorrect.
Common causes
Common causes include Faulty throttle position sensor, Wiring issues or electrical connections, Defective throttle body.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P151A 2016 Chevrolet Silverado Description

The P151A diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Throttle Actuator Control Signal Message Counter is incorrect. This code is specifically related to the throttle actuator control system, which is responsible for controlling the amount of air entering the engine for combustion. The throttle actuator control system consists of various components, including the throttle body, throttle position sensor, and electronic control module.

OBDII Code P151A 2016 Chevrolet Silverado - Throttle Actuator Control Signal Message Counter Incorrect
P151A 2016 Chevrolet Silverado Code - Throttle Actuator Control Signal Message Counter Incorrect

Common Causes of P151A 2016 Chevrolet Silverado

  1. Faulty throttle position sensor
  2. Wiring issues or electrical connections
  3. Defective throttle body
  4. Electronic control module malfunction
  5. Software issues or programming errors

Symptoms of P151A 2016 Chevrolet Silverado

  1. Engine hesitation or stalling
  2. Reduced fuel efficiency
  3. Rough idle
  4. Check Engine Light illuminated
  5. Lack of throttle response

How to Fix P151A 2016 Chevrolet Silverado

  1. Diagnose the issue using a scan tool to confirm the P151A code and pinpoint the exact cause of the problem.
  2. Inspect the throttle position sensor, wiring, and connections for any signs of damage or corrosion. Repair or replace as necessary.
  3. Check the throttle body for any carbon buildup or mechanical issues. Clean or replace the throttle body if needed.
  4. Test the electronic control module for proper functionality and reprogram if necessary.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P151A 2016 Chevrolet Silverado

The typical repair costs for addressing a P151A code in a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that these estimates are rough guidelines and actual costs may vary based on factors such as location, the shop's labor rates, and the extent of the repairs needed. It's recommended to consult with a certified mechanic or dealership for a more accurate cost estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P151A 2016 Chevrolet Silverado Code

1. What does OBDII code P151A mean for a 2016 Chevrolet Silverado?

The code P151A indicates that the Throttle Actuator Control System has detected an incorrect signal message counter.

2. What are the common symptoms of OBDII code P151A in a 2016 Chevrolet Silverado?

Common symptoms of code P151A may include rough idling, reduced engine power, and the Check Engine Light illuminating on the dashboard.

3. What are the possible causes of OBDII code P151A in a 2016 Chevrolet Silverado?

Possible causes of code P151A include a faulty throttle actuator, damaged wiring or connectors in the throttle control system, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose OBDII code P151A in my 2016 Chevrolet Silverado?

Diagnosing code P151A usually involves using a scan tool to retrieve the specific code, checking the throttle actuator and related components for faults, and inspecting wiring for any damage.

5. Can I still drive my 2016 Chevrolet Silverado with OBDII code P151A?

It is not recommended to drive your vehicle with code P151A as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P151A in my 2016 Chevrolet Silverado?

Repairing code P151A may involve replacing the faulty throttle actuator, repairing damaged wiring or connectors, or reprogramming the PCM to correct the signal message counter issue.

7. Is it necessary to reset the OBDII code P151A after repairing my 2016 Chevrolet Silverado?

After repairing the issue causing code P151A, it is advisable to clear the code using a scan tool. This will reset the Check Engine Light and monitor the system for any recurring issues.

8. Can a DIY enthusiast fix OBDII code P151A in a 2016 Chevrolet Silverado?

While some aspects of diagnosing and repairing code P151A can be done by a DIY enthusiast with the right tools and knowledge, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

9. How much does it cost to repair OBDII code P151A in a 2016 Chevrolet Silverado?

The cost of repairing code P151A can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs. It's best to get a quote from a trusted mechanic.

10. How can I prevent OBDII code P151A from occurring in my 2016 Chevrolet Silverado?

To prevent code P151A, it's important to perform regular maintenance on your vehicle, address any throttle-related issues promptly, and ensure proper care of the throttle control system components.

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